CAS 570-22-9 appears in our catalog under these names: 4,5-Imidazoledicarboxylic acid, 97%, 4,5–Imidazoledicarboxylic acid, 4,5-Imidazoledicarboxylic acid, 97% , 1H-Imidazole-4,5-dicarboxylic Acid, >98.0%(HPLC)(T), 4,5-Imidazoledicarboxylic acid, 99%. Offered by: Combi-blocks, GLPBio, Thermo Scientific (Alfa Aesar), TCI, Thermo Scientific (Acros). Available pack sizes: 100g, 25g, 500g, 1kg, 5g, 1g, 10g, 50g.